[dpdk-dev] [PATCH v2] net/mlx5: fix drop action seg fault
Nélio Laranjeiro
nelio.laranjeiro at 6wind.com
Mon Jun 26 14:28:46 CEST 2017
On Sun, Jun 25, 2017 at 07:55:01AM +0000, Shachar Beiser wrote:
> Missing room in flow allocation to store the drop specification.
> Changing flow without storing the change in rte_flow.
> Fixes: 88c77dedfbb0 ("net/mlx5: implement drop action in hardware classifier")
>
> Signed-off-by: Shachar Beiser <shacharbe at mellanox.com>
> ---
> drivers/net/mlx5/mlx5_flow.c | 10 +++++++---
> 1 file changed, 7 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/net/mlx5/mlx5_flow.c b/drivers/net/mlx5/mlx5_flow.c
> index 12893c6..86be929 100644
> --- a/drivers/net/mlx5/mlx5_flow.c
> +++ b/drivers/net/mlx5/mlx5_flow.c
> @@ -580,6 +580,10 @@ struct mlx5_flow_action {
> }
> if (action->mark && !flow->ibv_attr && !action->drop)
> flow->offset += sizeof(struct ibv_exp_flow_spec_action_tag);
> +#ifdef HAVE_VERBS_IBV_EXP_FLOW_SPEC_ACTION_DROP
> + if (!flow->ibv_attr && action->drop)
> + flow->offset += sizeof(struct ibv_exp_flow_spec_action_drop);
> +#endif
> if (!action->queue && !action->drop) {
> rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_HANDLE,
> NULL, "no valid action");
> @@ -1011,9 +1015,6 @@ struct mlx5_flow_action {
> return NULL;
> }
> rte_flow->drop = 1;
> - rte_flow->ibv_attr = flow->ibv_attr;
> - if (!priv->started)
> - return rte_flow;
> #ifdef HAVE_VERBS_IBV_EXP_FLOW_SPEC_ACTION_DROP
> drop = (void *)((uintptr_t)flow->ibv_attr + flow->offset);
> *drop = (struct ibv_exp_flow_spec_action_drop){
> @@ -1023,6 +1024,9 @@ struct mlx5_flow_action {
> ++flow->ibv_attr->num_of_specs;
> flow->offset += sizeof(struct ibv_exp_flow_spec_action_drop);
> #endif
> + rte_flow->ibv_attr = flow->ibv_attr;
> + if (!priv->started)
> + return rte_flow;
> rte_flow->qp = priv->flow_drop_queue->qp;
> rte_flow->ibv_flow = ibv_exp_create_flow(rte_flow->qp,
> rte_flow->ibv_attr);
> --
> 1.8.3.1
Acked-by: Nelio Laranjeiro <nelio.laranjeiro at 6wind.com>
--
Nélio Laranjeiro
6WIND
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